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P0870-OD HYDRAULIC PRESSURE TEST (CONTINUED) 13. CHECK OD HYDRAULIC CLUTCH CIRCUIT Remove the Valve Body and air check the OD hydraulic clutch circuit (in the case) for leakage per the Service NOTE: The OD hydraulic clutch circuit contains a small bleed orifice which connects to the Reverse hydrau- Was there excessive air leakage noticed during the air check? Yes >> Repair as necessary. Check the OD/Rev clutch piston seals, bleed orifice assembly, reaction shaft sup- port seal rings, and machining of the main mating faces on the pump housing, pump valve boday, and Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. No >> Disassemble and inspect the Valve Body and repair as necessary. Inspect the OD Accumulator piston and seals. Check for an extra check ball downstream from the #6 check ball pocket and repair as nec- Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. 14. (T9) OD PRESSURE SWITCH SENSE CIRCUIT OPEN Turn the ignition off to the lock position. Remove the Transmission Simulator, Miller tool #8333. Disconnect the PCM C4 harness connector and connect Miller tool Measure the resistance of the (T9) OD Pressure Switch Sense circuit Is the resistance above 5.0 ohms? Yes >> Repair the (T9) OD Pressure Switch Sense circuit for an open. Perform 45RFE/545RFE TRANSMISSION VERIFICATION No >> Go To 15 HB AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS 21 - 489 |